León, H. H.; Ramírez, J. F.; Sánchez, A.; Salazar, J. D.; Orjuela, L.; Anzola, S. V. Comparison of Maximum Lactate Between Course Navette Test and Hoff Test in Soccer Players at 2600 Meters above Sea Level. J. Hum. Sport Exerc. 2015, 10, 104-112.